Fluval Plant and Shrimp Stratum Aquarium SubstrateCollected from the mineral rich foothills of the famous Mont Aso Volcano in Japan. Fluval Stratum is the ideal substrate for stimulating the growth of aquatic plants in freshwater aquariums. Plant roots easily penetrate and spread throughout the substrate, allowing plants to obtain a variety of key, readily available nutrients that will make them flourish. The addition of Fluval Plant Micro Nutrients will ensure a full complement of essential macro